High performance Yb-doped double-clad optical fibers for high-power, narrow-linewidth fiber laser applications

Ji Wang; Stuart Gray; Donnell Walton; Ming-Jun Li; Xin Chen; A. Boh Ruffin; Jeffrey Demeritt; Luis Zenteno

doi:10.1117/12.690970

4 October 2006 High performance Yb-doped double-clad optical fibers for high-power, narrow-linewidth fiber laser applications

Ji Wang, Stuart Gray, Donnell Walton, Ming-Jun Li, Xin Chen, A. Boh Ruffin, Jeffrey Demeritt, Luis Zenteno

Author Affiliations +

Proceedings Volume 6351, Passive Components and Fiber-based Devices III; 635109 (2006) https://doi.org/10.1117/12.690970
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

This paper outlines recent work at Corning Incorporated on fiber composition design and fabrication of a SBS-managed, large-mode-area (LMA), Yb-doped double-clad fiber for high-power, narrow-linewidth fiber laser applications. Through a detailed theoretical analysis for the SBS threshold in optical fibers, an Aluminum/Germanium (Al/Ge) counter-graded fiber-core composition profile has been proposed and demonstrated for reducing the SBS effect, via the reduced-overlap between optical and acoustic modes in the fiber design. Such Al/Ge counter-graded-composition-profile design overcomes the limitation in a multilayer fiber-core approach, in terms of the low-loss fiber fabrication. The new compositionally SBS-managed, LMA Yb-doped double-clad laser fiber fabricated through the new design, has shown more than ~7 dB improvement in SBS threshold over the conventional LMA fiber design. The new fiber offers exceptionally low passive-loss characteristics, and has been demonstrated with uncompromised high laser efficiency for high-power, narrow-linewidth fiber laser applications.

Citation Download Citation

Ji Wang, Stuart Gray, Donnell Walton, Ming-Jun Li, Xin Chen, A. Boh Ruffin, Jeffrey Demeritt, and Luis Zenteno "High performance Yb-doped double-clad optical fibers for high-power, narrow-linewidth fiber laser applications", Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 635109 (4 October 2006); https://doi.org/10.1117/12.690970

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